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<?php function camelCase($string) { preg_replace_callback('/(?:^|_)(.?)/',"strtoupper('$1')",$string); return $string; } echo camelCase('common/home'); echo camelCase('common_home');
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught TypeError: preg_replace_callback(): Argument #2 ($callback) must be a valid callback, function "strtoupper('$1')" not found or invalid function name in /in/icYNO:4 Stack trace: #0 /in/icYNO(4): preg_replace_callback('/(?:^|_)(.?)/', 'strtoupper('$1'...', 'common/home') #1 /in/icYNO(8): camelCase('common/home') #2 {main} thrown in /in/icYNO on line 4
Process exited with code 255.
Output for 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: preg_replace_callback(): Requires argument 2, 'strtoupper('$1')', to be a valid callback in /in/icYNO on line 4 common/home Warning: preg_replace_callback(): Requires argument 2, 'strtoupper('$1')', to be a valid callback in /in/icYNO on line 4 common_home
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6
Warning: preg_replace_callback(): requires argument 2, 'strtoupper('$1')', to be a valid callback in /in/icYNO on line 4 common/home Warning: preg_replace_callback(): requires argument 2, 'strtoupper('$1')', to be a valid callback in /in/icYNO on line 4 common_home
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9
Warning: preg_replace_callback() requires argument 2, 'strtoupper('$1')', to be a valid callback in /in/icYNO on line 4 common/home Warning: preg_replace_callback() requires argument 2, 'strtoupper('$1')', to be a valid callback in /in/icYNO on line 4 common_home
preferences:
219.72 ms | 402 KiB | 355 Q